Walt Brown "Temperatures increase with depth inside the earth, Subterranean water abut 10 miles deep would have been extremely hot" RE: SCW "The initial pressure in the 10 mile deep subterranean chamber was about 62,000 PSI.... After centuries of of tidal pumping, the subterranean water exceeded the critical temperature , 705 degrees F. As the temperature continued to increase, the pressure grew, the crust stretched, and the energy from tidal pumping increasingly ionized the water." page 118 in In the beginning. 8th edition.First, fix your formatting on post #18.
Second, one of the principles of the HPT is that unless the Bible explicitly states a miracle occurred, you don't just assume God did a miracle, because anyone can say, "it was a miracle," to ad-hoc justify their belief or support for an idea.
The HPT seeks to understand the events of the Flood from a PHYSICAL standpoint.
Adiabatic cooling (expanding fluids cool rapidly) and heat being turned into kinetic energy (literally how rockets work) explain much of where the heat from the supercritical fluids from below the crust of the earth went.
You don't need a miracle to separate hot water from cold, because by the time the fluid has expanded the (proposed) 60 mile deep crack in the crust, it's already cooled to the extent that such a separation was not needed.
Again, the fountains of the great deep were sub-zero, not supercritical.
As far as miracles I claim nor insinuate any miracles were done after day 6.
Adiabatic not a chance, steam explosions add entropy to the atmosphere. Like in a volcano that is mostly the result of water explosion. Under Browns model, there is 1/2 the water on earth exploding into the atmosphere at well over 700 degrees, the idea that that is "adiabatic in its totality" is laughable. Now there is an aspect of this that is 40 days of rain means no sun for 40 days but it also means less heat escaping so it is a win / lose dynamic.